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What is a check dam used for?

Answer and explanation

Correct answer: To slow water flow and support groundwater recharge

A check dam is a small, low barrier constructed across a stream, seasonal channel, or drainage path. It slows the speed of flowing rainwater and temporarily holds some runoff, reducing soil erosion and allowing more water to infiltrate into the surrounding ground. This infiltration can support groundwater recharge, especially when the structure is designed and maintained appropriately. Therefore, option A is correct. A check dam is not an industrial installation, a machine for cutting plastic, or a storage facility for books. Its main environmental purpose is water conservation and runoff management, although it must be planned carefully so that it does not create new flooding, sediment, or ecological problems. The concept links small water structures with sustainable management of local water resources.

Related tags

Check DamWater ConservationGroundwater RechargeSoil ConservationGreen SkillsEmployability SkillsArtificial IntelligenceClass 12 Mcq

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